US5687449A - Soot blower unit - Google Patents

Soot blower unit Download PDF

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Publication number
US5687449A
US5687449A US08/559,934 US55993495A US5687449A US 5687449 A US5687449 A US 5687449A US 55993495 A US55993495 A US 55993495A US 5687449 A US5687449 A US 5687449A
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US
United States
Prior art keywords
lance tube
heat exchanger
track rail
spacing
soot blower
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US08/559,934
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English (en)
Inventor
Richard Zachay
Karl Albers
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bergemann GmbH
Original Assignee
Bergemann GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bergemann GmbH filed Critical Bergemann GmbH
Assigned to BERGEMANN GMBH reassignment BERGEMANN GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ALBERS, KARL, ZACHAY, RICHARD
Application granted granted Critical
Publication of US5687449A publication Critical patent/US5687449A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G1/00—Non-rotary, e.g. reciprocated, appliances
    • F28G1/16—Non-rotary, e.g. reciprocated, appliances using jets of fluid for removing debris
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G15/00—Details
    • F28G15/02—Supports for cleaning appliances, e.g. frames

Definitions

  • the present invention concerns a soot blower unit with an axially moved soot blower for the cleaning of heating surfaces of a heat exchanger.
  • the lance tube of the soot blower sags down by reason of its own weight.
  • the danger thereby arises that, in the case of tube nests lying one closely above the other, the nozzle head of the lance tube hits the nest tubes and damages them. Due to too small a spacing between the nozzle head and nest tube, it can come to erosions at the nest tubes. It is known, for the avoidance of such damage, to armor the nest tubes in the region of the travelling path of the lance tube. It is furthermore known to correct the path of the lance tube by the rear end of the lance tube when lowered. The travel track, at which the blower carriage is guided along for the drive of the lance tube, displays a kinked course.
  • the present invention is based on the object of so structuring the soot blower unit that a path correction of the lance tube can be achieved by simple means.
  • the lance tube guide of the lance tube is arranged in a fixed spatial relationship to the heat exchanger this relationship is settable before putting the soot blower unit into operation.
  • the nozzle head of the lance tube is therefore always centered when entering into the heat exchanger.
  • the rear end of the lance tube has a greater spacing from the track rail than the front end of the lance tube.
  • the front end, which is supported by the lance tube guide, of the lance tube is thereby set horizontally, obliquely upwards or obliquely downwards.
  • the nozzle head On a moving-in of the lance tube, the nozzle head is raised for an always central introduction into the heat exchanger, whereby the setting angle is constantly increased with the travel path into the heat exchanger. This rising setting angle counteracts the increasing sagging of the lance tube.
  • the travel path of the nozzle head can be set quite accurately by this correction so that the soot blower unit can also be used for heat exchangers with tube nests lying closely one above the other.
  • the possibility of being able to adjust the spacing of the lance tube guide relative to the travel carrier compensates for deviations in the actual bending through of the lance tube. These deviations result from, for example, differences in the wall thickness of the lance tube, which can fluctuate within the scope of the permissible tolerances in the tube dimensions.
  • the path curve which the nozzle head describes during the advance of the lance tube, is measured before putting the soot blower unit into operation.
  • the spacing between the lance tube guide and the travel carrier is so adjusted, once in proportion to this measurement, that the nozzle head does not contact the tubes of the heat exchanger, which are to be cleaned.
  • the travel carrier When the travel carrier is articulatedly connected with the wall of the heat exchanger, it recommends itself to arrange the lance tube guide of the lance tube on an end plate connected with the joint and to fasten the travel carrier at the end plate while maintaining the aforedescribed spacings between track rail, lance tube guide and rear end of the lance tube.
  • the soot blower unit can be arranged inclined towards the heat exchanger. In this manner, it is prevented that condensate, which would collect in the inner tube or in the lance tube, for example, by reason of a not quite tightly closing soot blower valve in the valve, flows away towards the heat exchanger and evaporates there. Damages at the nest tubes by thermal shock effect and erosions due to condensate blown in with the cleaning steam, are reduced appreciably. In that case, the nozzle head executes the aforedescribed movement, except for the setting angle of the lance tube in the rest setting, which is greater than for an horizontal arrangement of the travel carrier.
  • FIG. 1 is a side elevation of a soot blower unit without path correction
  • FIG. 2 is a side elevation of a soot blower unit with path correction
  • FIG. 3 is a side elevation of a soot blower unit with path correction and travel carrier arranged at an inclination to the heat exchanger wall, and
  • FIG. 4 a heat exchanger with built-in soot blower unit.
  • the illustrated soot blower unit contains an axially moved soot blower which serves for the cleaning of heating surfaces in heat exchangers.
  • a heat exchanger 1 can according to FIG. 4 be a pass of a boiler, which is bounded by walls 2 and in which heating surfaces constructed as tube nests 3 are accommodated.
  • the soot blower contains a lance tube, which engages over a stationary inner tube 5 and is guided at its rearward end by a blower carriage 7.
  • the inner tube 5 is provided with a blower valve 6, through which a blowing medium, for example steam, is fed by way of the inner tube 5 to the lance tube 4.
  • the lance tube 4 is connected with the blower carriage 7, which is driven by way of a motor 8 and movable on a track rail 9.
  • the lance tube 4 executes a rectilinear, initially forwardly and subsequently rearwardly directed movement, in a given case, with simultaneous rotation about its longitudinal axis.
  • the tip of the lance tube 4 is constructed as nozzle head 12.
  • the nozzle head 12 is provided on its circumference with several nozzles 13, from which the supplied steam issues radially.
  • the nozzle head 12 is led through an opening in the wall 2 of the heat exchanger 1. The opening is sealed by a wall box 14. In normal operation of the heat exchanger 1 and in the rest setting of the soot blower, the nozzle head 12 is retracted into the wall box 14.
  • the lance tube 4 In the proximity of the wall 2, the lance tube 4 is guided in a lance tube guide 15.
  • the lance tube guide 15 contains rollers 16, on which the lance tube 4 rests. The lance tube 4 is thereby guided at its forward end by this lance tube guide 15 and at its rearward end by the blower carriage 7.
  • the rearward end of the travel carrier 11 is connected, for example by way of a linkage 28, with the wall 2 of the heat exchanger 1 or with a frame surrounding the heat exchanger 1.
  • the forward end of the travel carrier 11 is articulated to the wall 2 for the compensation for thermal expansions of the heat exchanger 1.
  • this articulated connection consists of an additional, or second end plate 17, which is connected with the wall 2 by way of a joint 18.
  • the joint 18 contains two straps 20 and 21, which are connected by a hinge pin 19 and of which the one (20) is fastened at the additional end plate 17 and the other (21) at the wall 2.
  • the travel carrier 11 is provided with a first end plate 22, which is connected with the additional end plate 17. Expediently, the connection of the end plates 17 and 22 takes place by way of threaded bolts 23, which pass through both end plates 17 and 22 and are tightened by nuts. In order to be able to align the travel carrier 11 relative to the additional end plate 17, also after its installation, the bores, through which the threaded bolts 23 are guided, in one of the end plates, for example in the first end plate 22, are formed as elongate holes 24. The travel carrier 11 is connected with the additional end plate 17 and by way of the first end plate 22 with the wall 2 of the heat exchanger
  • the lance tube guide 15 with the rollers 16 for the guidance of the forward end of the lance tube 4 is fastened at the additional end plate 17.
  • the lance tube guide 15 is arranged at such a height that the nozzle head 12 enters centrally into the wall box 14.
  • the vertical spacing h 1 of the lance tube 4 from the track rail 9 is smaller than the vertical spacing h 2 of the rearward guided end of the lance tube 4 from the track rail 9.
  • the lance tube 4 and the track rail 9 are at an angle one to the other.
  • the lance tube 4 points therefore obliquely upwards when the travel carrier 11 is arranged horizontally.
  • the nozzle head 12 points upwards with the formation of a setting angle. In that case, this setting angle becomes the greater, the further the lance tube 4 is advanced. Since the lance tube 4 on the other hand sags by its own weight, the further the sag is downwards, the greater is its free unsupported length the nozzle head 12 is to move an approximately horizontally extending path.
  • the path curve of the nozzle head 12 is indicated, which the nozzle head 12 traverses when the lance tube 4 is moved into the heat exchanger 1 with an arrangement pointing obliquely upwards.
  • a path 26 arises, which departs a little from the horizontal line 25 and for which the tube nests 3 are not touched.
  • a course of the path 27 would set itself, for which the nozzle head 12 hits the tube nest 3 at the end of the travel path, or the spacing between the nozzle head 4 and the nest tubes would have to become too small.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Incineration Of Waste (AREA)
US08/559,934 1994-12-03 1995-11-17 Soot blower unit Expired - Lifetime US5687449A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4443128.7 1994-12-03
DE4443128A DE4443128B4 (de) 1994-12-03 1994-12-03 Rußbläsereinheit

Publications (1)

Publication Number Publication Date
US5687449A true US5687449A (en) 1997-11-18

Family

ID=6534876

Family Applications (1)

Application Number Title Priority Date Filing Date
US08/559,934 Expired - Lifetime US5687449A (en) 1994-12-03 1995-11-17 Soot blower unit

Country Status (7)

Country Link
US (1) US5687449A (de)
JP (1) JPH08159444A (de)
CN (1) CN1087420C (de)
AU (1) AU689640B2 (de)
DE (1) DE4443128B4 (de)
GB (1) GB2295657B (de)
RU (1) RU2148765C1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998025080A1 (en) * 1996-12-06 1998-06-11 Copes-Vulcan, Inc. Modular soot blower housing assembly
US20050235927A1 (en) * 2004-04-23 2005-10-27 Hwang Kwon S Lance system for inter-tube inspecting and lancing as well as barrel spraying of heat transfer tubes of steam generator in nuclear power plant
WO2014124199A1 (en) * 2013-02-08 2014-08-14 Diamond Power Internaitoanal, Inc. Condensate removal sootblower nozzle
CN109200297A (zh) * 2018-09-03 2019-01-15 江苏新美星包装机械股份有限公司 喷淋冷却机
CN111609752A (zh) * 2020-06-04 2020-09-01 蔡志雄 一种利用导热油回收工业废气余热的系统

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5778830A (en) * 1997-01-02 1998-07-14 Combustion Engineering, Inc. Closed frame sootblower with top access

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB970140A (de) *
US2089710A (en) * 1936-12-28 1937-08-10 James D Reekie Flue blower
US4380843A (en) * 1980-12-08 1983-04-26 Combustion Engineering, Inc. Droop correction structure and condensate control in sootblowers
US4387481A (en) * 1981-02-17 1983-06-14 White Consolidated Industries, Inc. Soot blower
JPS59107114A (ja) * 1982-10-20 1984-06-21 Babcock Hitachi Kk 長抜き差し型ス−トブロワ
JPH01217116A (ja) * 1988-02-26 1989-08-30 Babcock Hitachi Kk 長抜差形スートブロワおよびその運転方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3160907A (en) * 1964-12-15 tollow
DE1240212B (de) * 1961-06-02 1967-05-11 Babcock & Wilcox Dampfkessel Langvorschub-Russblaeser
NL141287B (nl) * 1962-10-12 1974-02-15 Diamond Power Speciality Inrichting voor het reinigen van in een gaskanaal opgestelde fluidum-verhittingsorganen.
US3216044A (en) * 1962-10-22 1965-11-09 Diamond Power Speciality Long travel soot blower with contoured rail
US3216045A (en) * 1964-04-22 1965-11-09 Diamond Power Speciality Lance tube deflection compensator for long retracting blower
US3439376A (en) * 1965-09-09 1969-04-22 Diamond Power Speciality Long retracting soot blower
US4813384A (en) * 1988-04-18 1989-03-21 White Consolidated Industries, Inc. Soot blower lance with ceramic coating

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB970140A (de) *
US2089710A (en) * 1936-12-28 1937-08-10 James D Reekie Flue blower
US4380843A (en) * 1980-12-08 1983-04-26 Combustion Engineering, Inc. Droop correction structure and condensate control in sootblowers
US4387481A (en) * 1981-02-17 1983-06-14 White Consolidated Industries, Inc. Soot blower
JPS59107114A (ja) * 1982-10-20 1984-06-21 Babcock Hitachi Kk 長抜き差し型ス−トブロワ
JPH01217116A (ja) * 1988-02-26 1989-08-30 Babcock Hitachi Kk 長抜差形スートブロワおよびその運転方法

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998025080A1 (en) * 1996-12-06 1998-06-11 Copes-Vulcan, Inc. Modular soot blower housing assembly
US20050235927A1 (en) * 2004-04-23 2005-10-27 Hwang Kwon S Lance system for inter-tube inspecting and lancing as well as barrel spraying of heat transfer tubes of steam generator in nuclear power plant
US7086353B2 (en) * 2004-04-23 2006-08-08 Korea Electric Power Corporation Lance system for inter-tube inspecting and lancing as well as barrel spraying of heat transfer tubes of steam generator in nuclear power plant
WO2014124199A1 (en) * 2013-02-08 2014-08-14 Diamond Power Internaitoanal, Inc. Condensate removal sootblower nozzle
US10018431B2 (en) 2013-02-08 2018-07-10 Diamond Power International, Llc Condensate removal sootblower nozzle
CN109200297A (zh) * 2018-09-03 2019-01-15 江苏新美星包装机械股份有限公司 喷淋冷却机
CN109200297B (zh) * 2018-09-03 2023-09-08 江苏新美星包装机械股份有限公司 喷淋冷却机
CN111609752A (zh) * 2020-06-04 2020-09-01 蔡志雄 一种利用导热油回收工业废气余热的系统

Also Published As

Publication number Publication date
GB2295657A (en) 1996-06-05
JPH08159444A (ja) 1996-06-21
DE4443128A1 (de) 1996-06-05
AU3434695A (en) 1996-06-13
DE4443128B4 (de) 2011-06-01
AU689640B2 (en) 1998-04-02
GB2295657B (en) 1998-07-01
GB9519238D0 (en) 1995-11-22
CN1126309A (zh) 1996-07-10
RU2148765C1 (ru) 2000-05-10
CN1087420C (zh) 2002-07-10

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